A narrow opening needs more than an “18-inch” label.
An 18-inch category dishwasher can have a different required opening width, height and depth from another machine in that category. Start with the narrowest clear cabinet measurements, then compare capacity and sound.
These are selected examples from our manufacturer-source catalog, ordered by brand and model. They are not a performance ranking or a guarantee of installation. Feature specifications do not resolve missing or conflicting opening measurements.
Links marked affiliate may earn us a commission. Payment does not change the selection criteria, measurements or order.
Three checks before choosing
Measure the cabinet opening from the finished floor. Do not substitute the old appliance's body dimensions.
Check the largest plates and pans you use. Place-setting capacity is a standardized manufacturer figure, not a guarantee that every dish shape will load.
Check the utility route, door swing, mounting and any trim needed at the sides. An 18-inch machine is not an automatic replacement for a 24-inch opening.
Manufacturer specifications, checked September 20, 2026. Annual energy is a published estimate; sound ratings and drying names are not our test results.
Tradeoffs to check
Listed capacity is 10 place settings; check how your larger pans load.
Manufacturer specifications, checked September 20, 2026. Annual energy is a published estimate; sound ratings and drying names are not our test results.
Worth considering
Three listed racks provide a separate level for smaller items.
Published 44 dBA rating: a lower-noise option within this catalog.
Tradeoffs to check
Listed capacity is 10 place settings; check how your larger pans load.
Manufacturer specifications, checked September 20, 2026. Annual energy is a published estimate; sound ratings and drying names are not our test results.
Tradeoffs to check
Listed capacity is 8 place settings; check how your larger pans load.
Wi-Fi requires a separately specified module; confirm availability before buying.
Recorded minimum opening: unverified × unverified × unverified inches (H × W × D). Check your actual opening; other installation conditions can block a match.
Manufacturer specifications, checked September 20, 2026. Annual energy is a published estimate; sound ratings and drying names are not our test results.
Tradeoffs to check
The listed arrangement has two racks, without a separate third rack.
Listed capacity is 10 place settings; check how your larger pans load.
Recorded minimum opening: unverified × unverified × unverified inches (H × W × D). Check your actual opening; other installation conditions can block a match.
Manufacturer specifications, checked September 20, 2026. Annual energy is a published estimate; sound ratings and drying names are not our test results.
Tradeoffs to check
The listed arrangement has two racks, without a separate third rack.
Listed capacity is 8 place settings; check how your larger pans load.
Manufacturer specifications, checked September 20, 2026. Annual energy is a published estimate; sound ratings and drying names are not our test results.
Tradeoffs to check
The listed arrangement has two racks, without a separate third rack.
Listed capacity is 8 place settings; check how your larger pans load.
Check delivery to your ZIP, installation, haul-away and the final total.
Does ADA mean it will fit under my counter?
No. Compare the actual installation drawing, minimum and maximum opening heights, and your finished floor. Our low-counter guide explains why a body under 32 inches can require a taller opening.
Is a third rack standard on an 18-inch dishwasher?
No. We show a rack count only when it is established in the reviewed source. “Not verified” is not a claim that a third rack is absent.
Keep checking before you order
Confirm the full model and finish, current stock, delivery to your ZIP, installation service, return terms and final price with the retailer. Our published annual energy figures are manufacturer estimates, not a prediction of your utility bill.
